Abstract: In order to promote the demonstration and popularization of Longdan 86 in suitable planting areas, the breeding process, related characteristics, yield, supporting cultivation and seed production techniques of Longdan 86 were introduced in this paper.Longdan 86 was bred by the High Yield Genetics and Breeding Research Office of Maize Research Institute of Heilongjiang Academy of Agricultural Sciences in 2009 with self bred inbred line Longxi 379 as female parent and improve inbred line H277 as male parent.The variety was approved by Heilongjiang Crop Variety Approval Committee in 2017（Approval number: Heishenyu 2017022）.It has the characteristics of high quality, multi resistance, high and stable yield and so on.